Pneumatic Tire Having Structure of Dual Reinforcement Belt Layer

Abstract

A pneumatic tire having a dual reinforcing belt structure, which minimizes deformation of the tire tread section during high-speed driving, particularly deformation of the tire shoulder parts, suppresses a standing wave phenomenon, and enhances driving stability. The pneumatic tire having a dual reinforcing belt structure includes a tread section, a sidewall section and a bead section, in which the bead section is provided with a carcass in a turned-up manner, a plurality of belt layers are provided by lamination between the carcass and the tread section, and a reinforcing belt is provided on top of the belt layer, while the reinforcing belt is a dual reinforcing belt in which belts made of different materials are arranged.

What is claimed is: 
     
         1 . A pneumatic tire having a dual reinforcing belt structure, the pneumatic tire comprising a tread section, a sidewall section and a bead section,
 wherein the bead section is provided with a carcass in a turned-up manner, a plurality of belt layers are provided by lamination between the carcass and the tread section, a reinforcing belt is provided on top of the belt layer, and   the reinforcing belt is a dual reinforcing belt in which belts made of different materials are arranged.   
     
     
         2 . The pneumatic tire having a dual reinforcing belt structure according to  claim 1 , wherein the dual reinforcing belt is formed from one layer of a full cover reinforcing belt and another layer of a full cover reinforcing belt. 
     
     
         3 . The pneumatic tire having a dual reinforcing belt structure according to  claim 2 , wherein the one layer is formed from a belt made of a nylon material, and the other layer is formed from a belt made of a high-strength material. 
     
     
         4 . The pneumatic tire having a dual reinforcing belt structure according to  claim 2 , wherein the one layer is formed from a belt made of a nylon material, and the other layer is formed from a belt in which a nylon material and a high-strength material are separated in different sections. 
     
     
         5 . The pneumatic tire having a dual reinforcing belt structure according to  claim 1 , wherein the dual reinforcing belt is formed from one layer of a full cover reinforcing belt and another layer of an edge cover reinforcing belt. 
     
     
         6 . The pneumatic tire having a dual reinforcing belt structure according to  claim 5 , wherein the full cover reinforcing belt of the one layer is formed from a belt made of a nylon material, and the edge cover reinforcing belt of the other layer is formed from a belt made of a high-strength material. 
     
     
         7 . The pneumatic tire having a dual reinforcing belt structure according to  claim 1 , wherein the dual reinforcing belt is formed from one layer of a full cover reinforcing belt. 
     
     
         8 . The pneumatic tire having a dual reinforcing belt structure according to  claim 7 , wherein the full cover reinforcing belt of the one layer is formed from a belt in which a nylon material and a high-strength material are separated in different sections. 
     
     
         9 . The pneumatic tire having a dual reinforcing belt structure according to  claim 3 , wherein the high-strength material is a hybrid material having an EPI (end/inch) of 19.0 to 35.0, a cord diameter (mm) of 0.3 to 1.0, a TOP.GA (mm) of 0.60 to 1.25, and a strength (kgf) of at least 12. 
     
     
         10 . The pneumatic tire having a dual reinforcing belt structure according to  claim 4 , wherein the high-strength material is a hybrid material having an EPI (end/inch) of 19.0 to 35.0, a cord diameter (mm) of 0.3 to 1.0, a TOP.GA (mm) of 0.60 to 1.25, and a strength (kgf) of at least 12. 
     
     
         11 . The pneumatic tire having a dual reinforcing belt structure according to  claim 6 , wherein the high-strength material is a hybrid material having an EPI (end/inch) of 19.0 to 35.0, a cord diameter (mm) of 0.3 to 1.0, a TOP.GA (mm) of 0.60 to 1.25, and a strength (kgf) of at least 12. 
     
     
         12 . The pneumatic tire having a dual reinforcing belt structure according to  claim 8 , wherein the high-strength material is a hybrid material having an EPI (end/inch) of 19.0 to 35.0, a cord diameter (mm) of 0.3 to 1.0, a TOP.GA (mm) of 0.60 to 1.25, and a strength (kgf) of at least 12.